Elements are
a. a chemical substance composed of atoms of two or more different types of atoms
b. substances that are made up of only one type of atom
c. subatomic particles with a positive charge
d. only found on earth

Works together in the synthesis, modification, packaging, and transport of lipids and proteins

Photosynthesis uses co2 and cellular respiration produces co2. we call the point when the two processes are in balance--when there is no net production of co2--the compensation point. how might you limit one of the processes in order to achieve a compensation point?

As the pea seeds respire, the level of coloured liquid in the left hand part of the capillary tube rises. by referring to what is happening in the apparatus, explain why the level of liquid changes